Background A broad spectrum of skin diseases, including hair and nails, can be directly or indirectly triggered by COVID‐19. It is aimed to examine the type and frequency of hair and nail disorders after COVID‐19 infection. Methods This is a multicenter study conducted on consecutive 2171 post‐COVID‐19 patients. Patients who developed hair and nail disorders and did not develop hair and nail disorders were recruited as subject and control groups. The type and frequency of hair and nail disorders were examined. Results The rate of the previous admission in hospital due to COVID‐19 was statistically significantly more common in patients who developed hair loss after getting infected with COVID‐19 ( P < 0.001). Telogen effluvium (85%) was the most common hair loss type followed by worsening of androgenetic alopecia (7%) after COVID‐19 infection. The mean stress scores during and after getting infected with COVID‐19 were 6.88 ± 2.77 and 3.64 ± 3.04, respectively, in the hair loss group and were 5.77 ± 3.18 and 2.81 ± 2.84, respectively, in the control group ( P < 0.001, P < 0.001). The frequency of recurrent COVID‐19 was statistically significantly higher in men with severe androgenetic alopecia (Grades 4–7 HNS) ( P = 0.012; Odds ratio: 2.931 [1.222–7.027]). The most common nail disorders were leukonychia, onycholysis, Beau's lines, onychomadesis, and onychoschisis, respectively. The symptoms of COVID‐19 were statistically significantly more common in patients having nail disorders after getting infected with COVID‐19 when compared to the control group ( P < 0.05). Conclusion The development of both nail and hair disorders after COVID‐19 seems to be related to a history of severe COVID‐19.

Objective Seborrheic dermatitis (SD) is a chronic inflammatory disease. The etiology of the disease is still unknown. The systemic immune‐inflammation index (SII), red cell distribution width (RDW), mean platelet volume (MPV), C‐reactive protein (CRP), monocyte to HDL cholesterol ratio (MHR), platelet to lymphocyte ratio (PLR), and neutrophil to lymphocyte ratio (NLR) have all been reported as inflammatory markers in recent studies. However, these inflammatory markers have not been explored in SD patients. This study aimed to explore inflammatory and hematological parameters in SD patients with healthy controls (HCs) and evaluate their possible relationship with disease severity. Materials and Methods One hundred patients who presented to our hospital were diagnosed with SD and 74 HCs were retrospectively included in our study. The seborrheic dermatitis area severity index (SDASI) score was used to assess the severity of the SD. Results The patient group's mean PLR, MPV ve CRP levels were statistically significantly higher than the HCs (p < 0.05). There was no statistically significant difference in the patients compared with the control group regarding RDW, NLR, MHR, and SII levels (p > 0.05). There was no statistically significant correlation between NLR, PLR, MPV, monocyte/HDL cholesterol, SII levels with age, and SDASI in the patient group. There was a significant correlation between CRP with age and RDW with SDASI score. Conclusion Hematological parameters and CRP are low‐cost tests. These tests can be used to define inflammation levels in inflammatory diseases. This study shows that PLR, CRP, and MPV may be used as novel inflammatory markers in SD.

The skin is the largest organ of the body and acts as a defensive barrier against microorganismal, chemical, and physical attack while protecting homeostasis of the internal environment. Disruption of this barrier plays an important role in the pathogenesis of some dermatoses and sensitive skin. Sensitive skin (cosmetic intolerance syndrome) is a widespread dermatological problem and is used as a universal language in the field of cosmetology. The global prevalence of sensitive skin is around 60%-70% in females and 50%-60% in males. [1][2][3] Sensitive skin is defined as the emergence of unpleasant sensations (stinging, burning, pain, itching, and tingling sensation) in

Purpose: After the emergence of the pandemic caused by the COVID-19 virus, vaccination with various vaccines has started to be implemented across the world. To identify dermatological reactions developing after the COVID-19 vaccines administered in Turkey and determine their clinical features and risk factors that may play a role in their development. Materials and Methods:The study included patients aged ≥18 years, who presented to 13 different dermatology clinics in Turkey between July 2021 and September 2021 after developing dermatological reactions following the administration of the COVID-19 vaccine. After providing written consent, the patients were asked to complete a standard survey including questions related to age, gender, occupation, comorbidities, the regular medication used, the onset of cutaneous reactions after vaccination, and localization of reactions. Dermatological reactions were categorized

The purpose of this study is to assess the profile of mobile health applications in the field of dermatology. Method: The data of the study performed in cross-sectional type have been obtained from the App Store between August-September 2017. All applications in health, fitness and medical categories in App Store, have been scanned according to the criteria specified and those which are related to dermatology have been included in the study. A total of 219 applications have been examined in total. Results: When the content of health applications in dermatology is examined, 70 (32%) of 219 applications are the ones in the form of questions and answers and data sharing towards increasing the level of knowledge and education among physicians and medical students. When it was tried to determine to which are the mobile applications were directed, it was found that of the first three applications developed the most, 160 (73.1%) were in the field of general dermatology, 21 (9.6%) were in Dermatocosmetology and 13 (5.9%) were in Dermatoscopy, and the least developed application was in the field of Dermatology + Plastic Surgery with 2 (0.9%). When the status of whether the application is paid examined, it was determined that 145 (66.2%) were free, and when we evaluate their languages, it was determined that 218 (99.5%) applications were in English. Conclusions: In general, dissemination of these applications, which make it easy for the physicians, medical students, patients and those who access the applications to reach up to date information and to follow and manage the disease and health status in the field of dermatology could be considered as a positive finding.